PNY 9800GT 1GB DDR3 and ML 10.8.2 no signal after boot (black screen)

[flash0151]

Here Guys,

I've redone my built to a Z77-DS3H mobo, 8GB Ram and I also install a 9800GT which was working fine under lion. After doing a fresh install with unibeast while booting up right after the apple logo the screen goes blank and the monitor says no signal. I've tried everything from different system profiles to GraphicsEnabler=No, -f , -f, -x and nothing has worked so far. This card worked out of the box with Lion. Any suggestions that can lead me to have this card working right?

Thanks
Semper Fi

 

[BillieJo]

What type of monitor are you using?
I recently switched out my 9500 for the 9800GT and was having the same problem.
I had a dual monitor configuration with an Insignia TV monitor via HDMI to DVI CABLE and an Apple Cinema Display with an ADC to DVI adapator.
The TV monitor doesn't work with the 9800GT.
The Apple monitor works fine. Now I'm looking for a kext or driver so the TV monitor and the 9800GT play nice with each other. Hope this little bit of info helps you in some way.